CONCORD, N.C. – The Yamaha Senior class, formerly known as Yamaha Supercan, is running the SR-Y Pipe and RLV 9110 Header at the Daytona KartWeek Margay Sprint Championships and throughout the 2013 WKA Man Cup season.

This notice is so there is no confusion at Daytona.

The SR-Y Pipe and RLV 9110 Header run with 1.750” connector tube – 9.5” from piston to end of connector tube.

This 2013 class rule change is listed on page 47 of the 2013 WKA Tech Manual. All current WKA master members either should have received their Tech Manuals or will receive them via U.S. Mail in the coming days.